Powerbook will not power on after HD upgrade

macrumors newbie

I recently tried to upgrade my powerbook with a new HD (see http://forums.macrumors.com/showthread.php?t=677016) but forgot to format the drive before trying to install the operating system. I gave it another go last night but with the new disk installed and everything back in place, it would not power back up. I took it to bits again and checked everthing was connected including the little ribbon cable from the keyboard but still nothing. I put the old disk back in with the same results. there is no response from the power key at all. Everything is pushed home where it should be so I'm a lttle worried about what could have happened.
What I did notice was that with no battery or power connected, I could hear a faint internal clicking that I guessed must have been getting it's power from the clock battery.

Has anyone had this happen to them and what did they do to resolve it?

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